JPS6226055Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an electric shaver, and particularly to a trimmer unit thereof.

[Background technology] In the trimmer unit of an electric shaver,
Space is required on one side of the movable blade for a spring member to keep the fixed blade and movable blade in contact and a driver for reciprocating the movable blade, but this is not possible with respect to the body housing of the electric shaver. In models that allow the trimmer unit to be moved by using the trimmer unit and to store the trimmer unit when not in use, it is not possible to cover the above arrangement space with the main body housing, and the arrangement space is left open when in use. As a result, hair and foreign matter are likely to enter the interior from this arrangement space, and hair and foreign matter that have entered around the drive element in particular interfere with normal operation.

[Purpose of the invention] The present invention was devised in view of these points, and its purpose is to prevent hair and foreign matter from entering around the drive element with a small number of parts. To provide an electric shaver equipped with a trimmer unit.

[Disclosure of the invention] Accordingly, the present invention is designed to press the trimmer blade into contact with the trimmer base by pushing up the drive element onto a pressing plate whose both ends are fitted and connected to the side walls hanging down from the left and right ends of the trimmer base, respectively. The trimmer base is equipped with a spring piece and a front wall that covers the placement space of the driver on the cutting edge side of the trimmer blade. This is the front wall of the presser plate that is attached to the holder to prevent hair and foreign matter from entering the interior.

The present invention will be described in detail below based on the illustrated embodiment.This electric shaver has a trimmer unit A built in the main body housing 1, and a trimmer unit A built in the main body housing 1.
A trimmer unit A emerges and retracts from a gate 3 at the top of the main body housing 1 in response to the operation of a handle 5 disposed on the outer periphery. First, to explain the overall structure, the outer cutter frame 13 has an arcuate spherical outer cutter 15 with a large number of small holes for introducing whiskers, and the outer cutter frame 13 has a fixing ring 18 attached to the outer cutter frame 13. It is screwed onto the upper surface of the blade mount 23 which is attached to the blade mount 23. The inner cutter 17, which rotates and slides on the inner surface of the outer cutter 15, is located on a blade mount 23, and is attached to the inner cutter block 16, which is connected to the output shaft 76 of the motor 80 via a joint 75. The main body housing 1 houses a battery 81 and a motor 80, and has a motor base 91 internally partitioning the two, a lower housing 12 on which the base 30 is disposed at the upper end, a trimmer unit A, and a trimmer unit A. It consists of an upper housing 11 that houses a mechanical part for loading and unloading, the above-mentioned blade mount 23 is attached to the upper end of the upper housing 11, and the lower housing 1
A battery cover 14 having a battery terminal fitting 87 is detachably attached to the lower end opening of the battery cover 2 .

The mechanism section includes a rotating plate 32 arranged on a base 30 and rotating together with the handle 5, and an operating wheel 3 supported by a shaft 31 erected from the base 30.
8. Consists of a trimmer operation plate 40 rotatably arranged around the boss 29 at the center of the base 30, and a door operation plate 41 rotatably arranged around the cylindrical shaft of the trimmer operation plate 40. The rotary plate 32 and the operating wheel 38 are engaged with each other, and the trimmer operating plate 40 and the door operating plate 41 are intermittently engaged with the operating wheel 38, respectively. A trimmer unit A is housed above this mechanism section with a trimmer holding plate 48 interposed therebetween. Here, the trimmer operation plate 40 is for moving the trimmer unit A back and forth, and the door operation plate 41 is for opening and closing the door 4 that closes the gate 3 through which the trimmer unit A enters and exits. A spiral cam groove 45 that engages with a trimmer pin 63 hanging down from the rear end is formed on the trimmer operating plate 40, and the trimmer pin 63 here also engages with the trimmer holding plate 48 that pushes up the trimmer unit A. Since the trimmer unit A is equipped with a guide pin 62 on its front upper surface that slides in a guide groove 64 on the lower surface of the blade mounting base 23, the handle When the trimmer operation plate 40 is rotated by input from the trimmer unit A, the trimmer unit A moves back and forth. Since the door operation plate 40 is connected to the door 4 which is slidable along a guide groove 54 formed on the circumference of the lower surface of the blade mounting base 23, the door 4 can be moved by movement from the handle 5. The gate 3 can be opened and closed by the trimmer unit A.
The movement is as follows: First, gate 3 opens, then trimmer unit A moves forward and its tip protrudes from gate 3, and then trimmer unit A retreats and then closes door 4.
Gate 3 will be closed at this point.

Now, the trimmer unit A includes a trimmer blade 2 consisting of a fixed blade 57 and a movable blade 58, a trimmer base 56 on which the trimmer blade 2 is mounted, a driver 59 and a presser plate 60 that are also mounted on the trimmer base 56. , and further includes a drive rod 61, a trimmer blade 2, a drive element 59, and a holding plate 60.
There is a drive rod 61 on the front lower surface of the trimmer base 56.
is attached to the rear of the trimmer base 56. The above-mentioned trimmer pin 63 and guide pin 62 are provided on the trimmer base 56. Further, a pair of locking protrusions 67 are protruded from the lower front surface of the trimmer base 56. On the other hand, the fixed blade 57 has a pair of locking holes 68, 68 that fit into the locking protrusion 67, and the movable blade 58 has a pair of horizontally elongated holes 69, into which the locking protrusion 67 can freely slide. 69 is perforated, and a movable blade 58
The drive pin 2 protrudes from the center of the top surface of the drive element 59.
A square hole 70 that engages with the hole 5 is provided in the center.
The drive element 59 has a connecting pin 10 hanging down from its lower surface.
0 is engaged and connected to a connecting protrusion 105 at the front end of a drive rod 61 disposed on the rear lower surface of the trimmer base 56. .

The drive rod 61 is formed into an annular shape in which a small diameter portion 107 and a large diameter portion 106 are continuous in the front and back.
One side is rotatably attached to the trimmer base 56 by a pin 108, and the flat part 109 on the other side is between vertically opposed stoppers 110 and 111 provided on the trimmer base 56. This prevents vertical vibration. The aforementioned motor 8
The joint 75 attached to the output shaft 76 of
A connecting shaft 9 with a non-circular cross section and an eccentric cam 10 are attached to transmit rotation to the inner cutter block 16, and when the trimmer unit A is moved backward and positioned inside the main body housing 1 as described above, Although the eccentric cam 10 is located within the large diameter portion 106 of the drive rod 61 and does not transmit the rotation of the motor 80 to the drive rod 61, when the trimmer unit A is moved forward, the eccentric cam 10 is located within the small diameter portion 107. Since the drive rod 61 is located inside and engaged with the drive rod 61, the rotation of the motor 80 causes the drive rod 61 to swing around the pin 108, thereby reciprocating the movable blade 58 via the driver 59. That is, the trimmer blade 2 can be driven only when the trimmer blade 2 is projected from the gate 3.

Now, the drive element 59 is disposed below the trimmer blade 2 as described above.
A pressing plate 60 is further arranged below. A pair of spring pieces 10 cut and raised on the left and right sides of the center
3,103, and the drive element 59 is connected to this spring piece 1.
The holding plate 60 that is pushed upward at 03 is
Fitting holes 104, 10 are provided in the rising pieces on both sides.
4, and the fitting hole 104 is engaged and fixed to the fitting protrusion 102 protruding from the inner surface of the elastic side walls 101, 101, which hang down from both sides of the front part of the trimmer base 56. 56, and this attachment also allows the trimmer blade 2 and driver 59 to be attached to the trimmer base 56. A front wall 112 rises from the front edge, and the upper This front wall 112 whose edge is close to the movable blade 58 covers the front of the driver 59 and the spring piece 103.

The holding plate 60 uses its spring pieces 103, 103 to move the trimmer blade 2 to the trimmer base 5 via the driver 59.
By pressing it against the front lower surface of the blade 6, it applies contact pressure between the fixed blade 57 and the movable blade 58, and at the same time eliminates rattling between the drive element 59 and the movable blade 58. Moreover, the front wall 112 prevents hair debris after cutting from entering around the drive element 59, and since it is in contact with the drive element 59, it is generated as the drive element 59 reciprocates. The vibration of the presser plate 60 is absorbed by the elastic side wall 101 of the trimmer base 56, thereby reducing the vibration and noise during operation of the trimmer blade 2, and also suppresses the lateral vibration of the spring piece 103. This makes it possible to stably press and hold the driver 59 against the movable blade 58 of the trimmer blade 2.

[Effects of the invention] As described above, in the present invention, by simply attaching the presser plate to the trimmer base, the spring piece applies contact pressure between the fixed blade and the movable blade of the trimmer blade, and at the same time The front wall formed on the holding plate prevents malfunctions caused by hair and foreign matter entering the area around the child.There is no need to provide a separate push-up spring or cover, and the number of parts is small, making it easy to assemble. Furthermore, the presence of the front wall increases the strength of the press plate itself, so the press plate does not easily deform.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same as the above, and FIG. 58 is a fixed blade, 58 is a movable blade, 59 is a driver, 60 is a holding plate, 101 is a side wall, 103 is a spring piece, and 112 is a front wall.

Claims (1)

[Scope of utility model registration request] A spring piece for pushing up the driver and pressing the trimmer blade into contact with the trimmer base, and a spring piece on the cutting edge side of the trimmer blade are attached to a presser plate whose both ends are fitted and connected to the side walls hanging down from the left and right sides of the trimmer base, respectively. 1. An electric shaver comprising: a front wall that covers a space in which a drive element is disposed;